The contents of this material reflect the views of the author and/or the Director of the Center for Advanced Aviation System Development (CAASD), and do not necessarily reflect the views of the Federal Aviation Administration (FAA) or the Department of Transportation (DOT). Neither the FAA nor the DOT makes any warranty or guarantee, or promise, expressed or implied, concerning the content or a...

This paper proposes novel Fuel Cell Auxiliary Power Unit (FCAPU) for J150+ aircraft application. The primary version of APU in J150+ aircraft is a gas turbine Auxiliary Power Unit (APU) which is based on gas turbine jet engine but in the suggested FCAPU, the generated electrical power is achieved from chemical energy with higher efficiency. The Solid Oxide Fuel Cell (SOFC) technology is used to...

Flow separation limits the efficiency of low-pressure turbines (LPTs) in aircraft engines. Experiments with vortex generator jets (VGJs), conducted in AFRL's low-speed cascade at Wright-Patterson AFB, have demonstrated dramatic reductions in separation losses. The critical science that will enable this design innovation to reach its potential is a comprehensive understanding of the effect of VG...

The irregular characteristics and geometric randomness of horn-type ice are significant while the behaviors separation complex. mechanism factor leading to essential change stall performance still not clear. According actual requirements airworthiness certification a large passenger aircraft, family shapes with different parameters constructed based on typical supercritical airfoil icing enviro...

We address the aircraft conflict resolution problem in air traffic control. introduce new mixed-integer programming formulations for with speed, heading and altitude control which are based on disjunctive linear separation conditions. first examine two-dimensional speed represented as continuous decision variables. show that proposed conditions equivalent to classical nonlinear separation. Furt...

Guidance and control of aircraft in the landing phase imposes extra pilot work loads, hence application of automatic landing control systems is of great importance. In this study automatic landing control systems are introduced and an optimal landing control system is designed. The control system performance criteria are based on minimum control effort. The designed system is simulated for a tr...

Abstract Starting from the current multifunctional integration and architecture design development status of flight control system for mainstream civil aircraft, this paper proposes concepts “In Out as a Whole”, “Direct Connection Transmission”, “Same Sources Routes” external sensors application sources fight system. External are air data, inertial Reference data angle attack in paper, specific...

This document provides a preliminary validation of the Small Aircraft Transportation System (SATS) Higher Volume Operations (HVO) concept for normal conditions. Initial results reveal that the concept provides reduced air traffic delays when compared to current operations without increasing pilot workload. Characteristic to the SATS HVO concept is the establishment of a newly defined area of fl...